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I was in the parking lot of the grocery store and the woman in the spot next to me was closing the back hatch in her SUV. Suddenly there was a loud noise and the window glass exploded. Some of the glass hit me but it was safety glass and came off in big hunks.

The temperature was in the mid 50s. What would cause such a thing?
 
Posts: 17719 | Location: Stuck at home | Registered: January 02, 2015Reply With QuoteReport This Post
Do No Harm,
Do Know Harm
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If safety glass is torqued laterally it can shatter. Maybe she pulled at the perfect angle? Or there could have been something with a sharp corner sitting in one of her bags high enough to hit the window when it was closed.

Side story...The day before my youngest was born we were loading our SUV to be ready to go to the hospital. I went to open the garage door with the back hatch open, just the glass window part, and it caught on the door. Pulled the window up until it shattered. Glass everywhere. I was finding glass in that garage two years later!




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Posts: 11476 | Location: NC | Registered: August 16, 2005Reply With QuoteReport This Post
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Hairline crack already in the glass, or she torqued it somehow when she tried to close it. I had my sunroof on my F150 explode like that driving down the tollway last year. Best I could figure out a rock got kicked up by another vehicle and it just came down and hit the right way. Weird thing the cars that were around me were not that close.



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Posts: 1156 | Location: The Republic of Texas | Registered: April 11, 2008Reply With QuoteReport This Post
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Tempered glass can spontaneously shatter. I was riding down a motorway in Britain in an M3 when the sunroof decided it had gone far enough. Sounded like a gun shot. Similar experience in PHX when the passenger side window departed the fix. I definitely thought that was a gun shot, but no bullet holes. One cold night in NE, the rear window on the station wagon just went. Yes, I'm tough on tempered glass!

RMD




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Posts: 20434 | Location: L.A. - Lower Alabama | Registered: April 06, 2008Reply With QuoteReport This Post
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When I was a kid in 50s Texas, it was not uncommon during the summer, for rear windows to shatter. It was commonly believed that interior heat build up would cause the break.

Common practice was to lower the driver’s window a half inch or so if parkd in the sun. I guess it was thought it would relieve heat and pressure.

I remember that our neighbors 59 chevy rear window shattered despite driver window being slightly open. The owner, an engineer, seemed surprised.

I don’t remember this occuring after the late 60s. I figured the manuf’s figured it out and corrected some design flaw.

Anyone remember this sort of thing?
 
Posts: 1623 | Location: Texas Hill Country | Registered: April 07, 2006Reply With QuoteReport This Post
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Tempered glass can do that. There is a lot of residual stress and sometimes the rear window defroster or many other things will push it over the edge.


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Posts: 10030 | Location: NE GA | Registered: August 22, 2002Reply With QuoteReport This Post
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Most often due to defects on the peripheral of the glass, and in temp extremes, very cold soak at night and then sun warming the glass or frame at a faster rate on different areas can cause the glass to shatter spontaneously or from a shock.

If you use double polarization film you can see the patterns in the tempered glass.

Typically checkerboard or diamond shapes.




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Posts: 44763 | Location: Box 1663 Santa Fe, New Mexico | Registered: December 20, 2008Reply With QuoteReport This Post
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I lost the sunroof on a 2013 Honda Accord on a deserted road on a 50 degree day. Honda replaced it under warranty as the car was 6 month old. The service manager said he'd never heard of a sunroof blowing out. I suggested he google it as there are lots of cases.

Too much stress in the glass during manufacturing or installation.



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Posts: 4299 | Location: Saddlebrooke, Arizona | Registered: December 24, 2013Reply With QuoteReport This Post
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My parents had a '51 Buick into the late 50's. My mother and I were in it driving near our house when the center section of the three piece back window just went "pop".


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Posts: 8529 | Location: Livingston County Michigan USA | Registered: August 11, 2002Reply With QuoteReport This Post
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Was it a Ford?
They have had some issues. Including ones that just go kaboom with no one around.
https://www.expeditionforum.co...window-breaks.37576/


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Posts: 25905 | Registered: September 06, 2003Reply With QuoteReport This Post
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The rear window of my minivan imploded like that on a bitter cold day. I speculate that the defroster may have contributed some stress to a pre-existing crack. It made me really jump, so it's good I was on a city street when it happened rather than the hilly winding highway I'd just left.


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Posts: 2161 | Location: The Sticks in Wisconsin. | Registered: September 30, 2012Reply With QuoteReport This Post
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A tempered window in the office next to mine exploded a couple of months ago. This is a thirty year old building. The glass man said it happens sometimes. Stresses, cracks, who knows? It rained glass down the side of the building. We are ten stories up.




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Posts: 53447 | Location: Texas | Registered: February 10, 2004Reply With QuoteReport This Post
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We had a '79 Olds wagon that the back window shattered just sitting in the driveway one day.

On a semi related note.. also had a drinking glass explode out of the blue in the kitchen cabinet once.


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Posts: 21545 | Location: 18th & Fairfax  | Registered: May 17, 2003Reply With QuoteReport This Post
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Or, ZSMICHAEL, maybe someone just doesn't like you, and was shooting a BB or pellet with you as the target. But they're not the best at aiming.....

Just saying........ Big Grin


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Posts: 2769 | Location: Middle TN | Registered: March 22, 2009Reply With QuoteReport This Post
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quote:
Originally posted by maxdog:
When I was a kid in 50s Texas, it was not uncommon during the summer, for rear windows to shatter. It was commonly believed that interior heat build up would cause the break.

Common practice was to lower the driver’s window a half inch or so if parkd in the sun. I guess it was thought it would relieve heat and pressure.

I remember that our neighbors 59 chevy rear window shattered despite driver window being slightly open. The owner, an engineer, seemed surprised.

I don’t remember this occuring after the late 60s. I figured the manuf’s figured it out and corrected some design flaw.

Anyone remember this sort of thing?


Yup, it was pretty common around here as well.

Bob


I am no expert, but think I am sometimes.
 
Posts: 4610 | Location: South Carolina | Registered: January 23, 2004Reply With QuoteReport This Post
teacher of history
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Back in 77 on a sub zero day, my boss and I were scraping ice off the rear window of a Ford when the entire rear glass blew about 20 feet across the parking lot.
 
Posts: 5720 | Location: Central Illinois | Registered: March 04, 2001Reply With QuoteReport This Post
Member
Picture of P250UA5
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quote:
Originally posted by Black92LX:
Was it a Ford?
They have had some issues. Including ones that just go kaboom with no one around.
https://www.expeditionforum.co...window-breaks.37576/


2015+ F150s had a few incidents of rear window explosions as well. Been a while since I've been on the F150Forum, but I seem to recall a lot were replaced under warranty, with a few exceptions.

IIRC, it was related to the rear window defroster on a few.




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Posts: 16352 | Location: Spring, TX | Registered: July 11, 2011Reply With QuoteReport This Post
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I wish I'd known this as a kid - we could have blamed the broken sliding glass door on some manufacturing defect or weather phenomenom instead of me and my brother fighting....


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Posts: 3794 | Location: East Tennessee | Registered: August 21, 2006Reply With QuoteReport This Post
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Had it happen to me....twice!


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Posts: 2116 | Location: South Dakota-pheasant country | Registered: June 20, 2005Reply With QuoteReport This Post
Mensch
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My 2004 Acura RSX-S did that. Closed the hatch a little crooked...BOOM!


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Posts: 16169 | Location: Ivorydale | Registered: January 21, 2005Reply With QuoteReport This Post
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